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[Q] HDMI output, audio poor quality? SOLVED, see #32

Hi
I just got a UK Wi-Fi Xoom, and started out by installing 3.1 and tiamat 1.4 OC kernel on it.
Now i hooked it up to my amp/tv (Onkyo amp, Panasonic TV) but no matter what i played, the audio quality was really poor (no bass, sounded like 8khz mono). Actually the audio coming from the built in speakers sound better! The cable should be fine, as i briefly tried it with an Optimus 2X, and as far as i remember audio was fine...
Any ideas?
Edit: Solved! See #32

This might not be the best test but I hooked up my Xoom directly to the TV which outputs to a pair of Bose bookshelf speakers and Angry Birds sounded great.
What I found off was the color quality of the home screen and through Quick Pic and stock Gallery. Angry Birds looked and played fantastic. My 3 and 5 year olds were glued to the screen. To fix the color I probably need to play with the color settings on the TV...no biggie. Haven't tried a movie yet.

Hi
After i wrote this i tried connecting it directly to the TV. Same result... (crappy audio). I only tried movies/music, and not games, which really dosent matter that much

same problem for me, European 3G Xoom running 3.0.1
Image quality is good, audio very poor.

I have also noticed that the audio quality leaves alot to be desired when using the HDMI out. Granted I am playing them through my TV speakers, but it does seem to be of lesser quality then other sources like OTA TV. Colors also seem a bit off, or over saturated or something. Maybe playing with the TV color settings would help that.
But its still pretty cool that xoom has HDMI mirroring, I use it alot.

I have the same problem... Connecting the audio via the 3.5mm jack sounds great, but connecting via HDMI seems to only send 2 channel audio, with no bass, maybe even at a lower bit rate (not sure, but it sure sounds crappy).

Same issue here. The audio is also heavily clipped. I tried to adjust the volume on the XOOM to at least alleviate the clipping, but I found that the volume controls have no effect on the HDMI out volume (at least on Android 3.1 + Tiamat 1.5 GHz with GPU OC).

willverduzco said:
Same issue here. The audio is also heavily clipped. I tried to adjust the volume on the XOOM to at least alleviate the clipping, but I found that the volume controls have no effect on the HDMI out volume (at least on Android 3.1 + Tiamat 1.5 GHz with GPU OC).
Click to expand...
Click to collapse
I can confirm that the volume controls also has no effect on the HDMI output volume on stock, non-rooted Xoom 3.1.

ok so it is not just mine... Now the big question is if it is every xoom that has this issue or if it is just a selection?

Iv been asking about his for weeks. The sound output is terrible. Hooked up to my Sony system, same as OP says, no bass whatsoever. Same exact sound at same volume played through audio jack is giving my neighbor a heart massage.
Im really disappointed because I was hoping to output some nice tunes and even films but audio quality is unbearable.
Stock UK 3G on 3.0.1.
I demand answers :-D
Macbots drool as I XOOM through the Galaxy to my hearts Desire.

alias_neo said:
Iv been asking about his for weeks. The sound output is terrible. Hooked up to my Sony system, same as OP says, no bass whatsoever. Same exact sound at same volume played through audio jack is giving my neighbor a heart massage.
Im really disappointed because I was hoping to output some nice tunes and even films but audio quality is unbearable.
Stock UK 3G on 3.0.1.
I demand answers :-D
Macbots drool as I XOOM through the Galaxy to my hearts Desire.
Click to expand...
Click to collapse
I'm glad to see this thread too. I've asked about this in other threads and on other forums and the only type of response I get is something like "I hooked it up to my tiny TV and opened the radio Disney app and it sounded just fine!" So it's good to hear people with ears noticing what I've been noticing.
That being said, from what I've been able to research it's either a problem with honeycomb's media player app or honeycomb itself. I've looked at the kernel code and while I did discover that the sample rate is hard coded to 44100 for the audio (with a TODO note in there to make it configurable eventually) I didn't see any errors that would cause it, unless it has to do with the fact that the kernel driver is forcing it to 2 channels but it's possible that honeycomb separates the sub woofer channel which is then discarded by the lower level drivers. Another theory is that they apply some equalization to the sound to make it sound decent on the internal speakers and that sound equalization gets applied to HDMI out as well (but not headphone out). What do you guys think?

Would be interesting to see how other HC devices perform in this area, sound quality, and video quality over HDMI. That might help to pin point weather this is a HC issue or a Xoom hardware issue.
The other HC devices that could be tested:
Acer Iconia Tab -- NO HDMI out
Galaxy Tab 10.1 -- NO HDMI out (proprietary dock connector for video out?)
Tmobile Gslate -- NO HDMI out
Asus Transformer -- Yes (Mini HDMI (Type C))
FWIW the Asus Transformer has the HDMI port is on the device and not on the keyboard accessory.
Xooms HDMI is listed as: "HDMI Type D (HDMI 1.4) connector"
I wonder what the quality of the Asus Transformer has on HDMI out, I wonder if it even does full mirror mode.
Wait, serioulsy only one other HC device has an HDMI out? Strange.
I wonder how GingerBread or Froyo quality is with HDMI mirror, are there any android phones with out of the box HDMI out with mirror?
My EVO has HDMI out but it doesn't mirror out of box, I think there is way with custom roms/kernels to get EVO HDMI mirror working.
Droid X has HDMI but no mirror unless you root, and install a special APK.
Are there any android phones with HDMI out mirror?

pearl62 said:
I have the same problem... Connecting the audio via the 3.5mm jack sounds great, but connecting via HDMI seems to only send 2 channel audio, with no bass, maybe even at a lower bit rate (not sure, but it sure sounds crappy).
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Click to collapse
Greetings. Same problem with HDMI....workable, tolerable with EQ on amp. However....steaming music through Tune In radio or any other service is where I have a problem with the 3.5mm. Music Beta starts automatically. No matter what I do I can't get it to stop.
Suggestions...workarounds? Do I need to root the thing and remove Music Beta and go third party?

The Acer Iconia A500 does have micro HDMI out

Hi all,
Sorry to go against the majority here but connecting the Xoom to my Dell 21.5" HD Monitor with a Motorola Micro HDMI to HDMI cable is bringing me great results the picture quality is stunning. For sound i use the Audio out on the monitor to take the sound to my JBL powered sub woofer and 4 speakers and this also sounds great and i can also use the volume controls on the Xoom to change the volume through the speaker system. Are you all using the Motorola cable or another make?
Marc

I have the same issue. Horrible audio unless I use a 3.5mm Jack. I want good HDMI out... :'(
Sent from my Xoom using XDA Premium App

what9000 said:
I have the same issue. Horrible audio unless I use a 3.5mm Jack. I want good HDMI out... :'(
Sent from my Xoom using XDA Premium App
Click to expand...
Click to collapse
Same here. As soon as I started playing a movie through HDMI out I knew something was wrong. Came on here for an explanation or a solution, guess its down to a software limitation?

someone should bring this up in the Motorola owners forum. The forum mod there, Mmat, is really good about addressing issues the community brings to light and telling the software team

Epedemic said:
Hi
I just got a UK Wi-Fi Xoom, and started out by installing 3.1 and tiamat 1.4 OC kernel on it.
Now i hooked it up to my amp/tv (Onkyo amp, Panasonic TV) but no matter what i played, the audio quality was really poor (no bass, sounded like 8khz mono). Actually the audio coming from the built in speakers sound better! The cable should be fine, as i briefly tried it with an Optimus 2X, and as far as i remember audio was fine...
Any ideas?
Click to expand...
Click to collapse
you can take another HDMI machine to test your tv. the HDMI line is also very important. my xoom is run well in my sharp tv.

I have the same problem with the sound quality that I get when connecting my WiFi only Xoom to my HT system. I tried connecting to a Bose lifestyle V30 and I get sound but it is just flat. No bass what so ever and only get sound from my center speaker. I tried a different HDMI input in the Bose system with the same result. If I connect the Xoom via headphone jack to RCA imput it woks just fine and get good quality sound.
I tried connecting to a Denon AVR-2308CI and I get the same result that I get with the Bose system. I have used 3 different HDMI cables, including a Motorola brand. No difference. Picture quality is great in all cases but the sound is just flat.
Now the question is: Is this a hardware or a software limitation?

[Q] Purchased cord HDMI sound problem??

Hello Guys,
I purchased a belkin micro hdmi cable yday... Mirroring worked pretty fine. Even played some demo 1080p videos on my g2x and they looked great. But the sound still comes from G2x instead of TV speakers.. I am sure tv supports sound from hdmi (i have a ps3 that works like that). I also couldn't find any settings that can change the audio output method. Is this the way it works i.e. (the sound never comes from tv??)..

Aneelll said:
Hello Guys,
I purchased a belkin micro hdmi cable yday... Mirroring worked pretty fine. Even played some demo 1080p videos on my g2x and they looked great. But the sound still comes from G2x instead of TV speakers.. I am sure tv supports sound from hdmi (i have a ps3 that works like that). I also couldn't find any settings that can change the audio output method. Is this the way it works i.e. (the sound never comes from tv??)..
Click to expand...
Click to collapse
Sound is most definitely output to TV over. There are no settings (other than manual resolution), it's all automatic.

Yup.. it worked today though with out me doing anything different.. I'l keep an eye on when this happens again. I am running only stock android but just rooted (for the setDNS app to revive my wifi ). So should be a glitch in the stock kernel(like many other problems) if it occurs randomly..

MHL adapter for One S stutters on video

Hi! This is my first post on xda-developers. I'm not sure if this qualifies as a "question", bound for a Q&A...
I have an HTC One S (US, T-Mobile) for which I bought a cheap MHL adapter. The adapter plugs in to the phone's micro-USB port, has an HDMI out and requires you to plug the phone's charger into the adapter, providing charge to the phone. I'm pushing to an old monitor so the adapter's HDMI out goes through an HDMI to DVI adapter before reaching the display.
Everything is working fine except for video. It seems that no matter the video quality, the image constantly stutters. Neither the default video player nor MX Player (on H/W, H/W+, or S/W) will play more than a few seconds of video before locking up for several seconds, then only advancing a frame or two. There's no problem with video when not connected to the adapter. A fresh restart doesn't seem to help and I don't think I have any extra memory-hogging background apps (just the standard Sense and T-mobile apps).
Has anyone else had the same problem? My previous feature phone had a simple S-video out that let me show pictures and videos to my family while on holidays. Perplexing that I'm being outclassed by that old brick!
Thanks for any insights/advice!

No problems with my S and a MHL adapter (video is jerky cause it was recorded using a desire):
Skip to 1.53 for 1080P film playback
Give it a try on some other monitor/TV without the DVI adapter.
Also try BS player lite instead of MX player (although this most likely won't fix it as MX and stock should be perfectly fine)

Terminator19 said:
No problems with my S and a MHL adapter (video is jerky cause it was recorded using a desire):
Skip to 1.53 for 1080P film playback
Give it a try on some other monitor/TV without the DVI adapter.
Also try BS player lite instead of MX player (although this most likely won't fix it as MX and stock should be perfectly fine)
Click to expand...
Click to collapse
Indeed, it works like a charm on a proper HD TV without the DVI adapter. Now I wonder if it's the adapter or the higher resolution of the monitor I'm plugging in to, and unfortunately, there doesn't seem to be a way to control the output resolution from the phone. Perhaps it's using the highest available or perhaps it has to do some non-native scaling of the video.
Thanks for your help!

jbiesin said:
Indeed, it works like a charm on a proper HD TV without the DVI adapter. Now I wonder if it's the adapter or the higher resolution of the monitor I'm plugging in to, and unfortunately, there doesn't seem to be a way to control the output resolution from the phone. Perhaps it's using the highest available or perhaps it has to do some non-native scaling of the video.
Thanks for your help!
Click to expand...
Click to collapse
What is the res. of the monitor? You should be able to find out what res. it is running at once the phone is plugged in (should be a wee info. box that pops up stating res., refresh rate etc.)
I think it could just be the DVI/HDMI adapter causing problems.
No problem

jbiesin said:
Hi! This is my first post on xda-developers. I'm not sure if this qualifies as a "question", bound for a Q&A...
I have an HTC One S (US, T-Mobile) for which I bought a cheap MHL adapter. The adapter plugs in to the phone's micro-USB port, has an HDMI out and requires you to plug the phone's charger into the adapter, providing charge to the phone. I'm pushing to an old monitor so the adapter's HDMI out goes through an HDMI to DVI adapter before reaching the display.
Everything is working fine except for video. It seems that no matter the video quality, the image constantly stutters. Neither the default video player nor MX Player (on H/W, H/W+, or S/W) will play more than a few seconds of video before locking up for several seconds, then only advancing a frame or two. There's no problem with video when not connected to the adapter. A fresh restart doesn't seem to help and I don't think I have any extra memory-hogging background apps (just the standard Sense and T-mobile apps).
Has anyone else had the same problem? My previous feature phone had a simple S-video out that let me show pictures and videos to my family while on holidays. Perplexing that I'm being outclassed by that old brick!
Thanks for any insights/advice!
Click to expand...
Click to collapse
im using the cable matters one and it works great

Wrong section
Sent from my HTC VLE_U using xda app-developers app

Can I buy any MHL cable? and does it work with AOSP roms? Looking to get a cheap one on amazon.

Darknites said:
Can I buy any MHL cable? and does it work with AOSP roms? Looking to get a cheap one on amazon.
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Click to collapse
If it doesn't say that it supports the one S, then don't buy it. It could/should work even if the one S is not listed but I rather not take the risk.
http://www.amazon.co.uk/s/ref=nb_sb...l=search-alias=aps&field-keywords=HTC+one+MHL
Should work with AOSP ROMs as well.

Terminator19 said:
If it doesn't say that it supports the one S, then don't buy it. It could/should work even if the one S is not listed but I rather not take the risk.
http://www.amazon.co.uk/s/ref=nb_sb...l=search-alias=aps&field-keywords=HTC+one+MHL
Should work with AOSP ROMs as well.
Click to expand...
Click to collapse
Nice one dude, I have a look into that.

Darknites said:
Nice one dude, I have a look into that.
Click to expand...
Click to collapse
http://www.amazon.com/gp/product/B006V7F380/ref=oh_details_o00_s00_i00 this is the highest rated mhl adapter

knickerblogger said:
http://www.amazon.com/gp/product/B006V7F380/ref=oh_details_o00_s00_i00 this is the highest rated mhl adapter
Click to expand...
Click to collapse
Thanks I get that one but from uk amazon lol.

[Q] HDMI issues w\ new OTA update...

I'm new to the forum and maybe you all can shed a little more light on my situation.
My tf300 is only about 3 months old. I purchased this tablet over others because of the HDMI port. The problem is that after the latest OTA update my tablet stopped producing audio through HDMI on one of my HDTVs but the picture shows fine (except its not in 1080i when watching HD video but instead 1360x768 for everything...whats that about?). I've done as much troubleshooting as I can think of but I can't figure out why it stopped working on one TV and not the other using the same cable. Also, before anyone says it, its not the television because when I plug any other HDMI device into the ports, they work flawlessly.
I've done some searching through the forums and I haven't come across anyone with an issue quite like mine after the 4.2 update. Any suggestions?

You didn't search right, there are several threads open on this subject. As I posted in them, regarding the audio via HDMI, you must set the tablet volume before connecting the HDMI cable, otherwise the tablet will output audio for the TV at zero volume. If this doesn't fix it for you, I don't know what could you do more. Some people reported issues even with this trick. For me it works.

Nope...
vap_66 said:
You didn't search right, there are several threads open on this subject. As I posted in them, regarding the audio via HDMI, you must set the tablet volume before connecting the HDMI cable, otherwise the tablet will output audio for the TV at zero volume. If this doesn't fix it for you, I don't know what could you do more. Some people reported issues even with this trick. For me it works.
Click to expand...
Click to collapse
I did search correctly... here and on other forums and saw that "solution". It didnt work for me. If you go back and pay close attention to what I originally posted you'd notice that the HDMI works fine on my other TV... as simple as plug and play, but doesnt work on my other (most used) TV after the latest OTA update.

MHL Cable Discussion Thread

I wanted to make this a discussion thread for MHL cables. Currently, I have a Rocketfish MHL Cable and I love it. It doesn't have to be plugged into the wall via micro usb for it to work, unlike my ONN brand cable.
Other things I would like everyone to discuss, is quality and content. I love the quality of picture that mine displays, pretty sure it's 1080p, but how about other brands?
Now for content. Has anyone been successful in getting a MHL Cable to work with protected material? For example, when I hook mine up and try to watch NFL Mobile, it says "HDMI Is Not Supported". Is there a Rom that will work? Maybe an App to download? Xposed Framework module?
Also, speaking of nfl games, has anyone been successful in getting a Super Nintendo emulator working with hdmi and two controllers for playing multiplayer games?
Basically, let's discuss anything and everything MHL for HTC One M8!!!

I never put much thought into MHL, but came to this topic hoping to learn something. I found your cable on Amazon, and a lot of people are saying it doesn't work. Others are saying it does, but with an adapter. Together, the two add up to the cost of a Chromecast (which I have no experience with), so, what does an MHL cable do that Chromecast doesn't, aside from charging your phone, of course.

Dark Reality said:
I never put much thought into MHL, but came to this topic hoping to learn something.
Click to expand...
Click to collapse
I'm hoping to learn something too. I'm going to buy a chrome cast tonight. I did some searching on the web and found out that I can use my HTC One M8 to screen mirror or mirrorcast to my TV. Someone out their has created an App that enables mirroring with any rooted device. Link is here https://www.androidfilehost.com/?fid=23578570567717826
The guys over at Wal-Mart were nice enough to let my play and connect a chrome cast up to my phone. After downloading the file, I was able to watch NFL Mobile Network and Stream Twitch to a TV without any problems. There was a slight lag from what the phone showed, but nothing terrible as the sound and video synced up perfectly on the tv I was testing it out on.
I'm glad I got those two apps to stream to a TV. Not sure if an MHL Cable is going to offer anything more than a chrome cast. I'll see if I can tell a difference in quality or lag input. Thanks for bringing up the chrome cast. I know the HTC One M8 mirror option isn't supported yet, but with the phone being rooted and the extra app enabled, I can now stream anything and everything from my phone to my TV.

I haven't had any experience at all with MHL but do have a few thoughts about it vs Chromecast. I come from a long list of Motorola phones which all came with a dedicated HDMI port. If MHL is the same thing as HDMI, Chromecast is the way to go. At least for me. Since getting the ability to mirror on Chromecast, I really can't think of any advantage of using HDMI. There's a couple of really good advantages for using Chromecast though. Assuming MHL works the same way HDMI does, using it doesn't allow you to do anything with your device while mirroring on the TV. If you do something on the phone, the TV displays it. Also, the screen on your device has to remain on all the time. If you happen to use/stream Netflix or Youtube or some such thing, the screen never shuts off. However, if you use Chromecast for those types of things (or other apps that support it) you can still use the phone to play a game, browse the web or whatever it is you want to do. It has no effect on the movie you're playing. A big plus is you can also turn the screen off while streaming a movie or whatever. If you turn the screen off while streaming a 2 hour movie while using Chromecast, the battery drain is next to nothing compared to HDMI (again, assuming MHL is the same). If you mirror with Chromecast, then things are pretty much the same. The ability to turn the screen off or browse the web, etc.while streaming media is a huge advantage for Chromecast. At least, the way I use my phone, it is for me.
I apologize if my post is somewhat off topic but I figured since Chromecast came into the conversation and I do have experience with HDMI, I'd put my two cents worth in. Just my thoughts on the subject.

FWIW, this cable works on my phone.
http://smile.amazon.com/gp/product/B00F8FGSOE/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

Best MHL for HTCOne M8
Hello , I just purchased an MHL cable for my phone and it only works intermittently. You mentioned the rocketfish. Is it reliable and doesn't cut out?
QUOTE=BygSii;55211766]I wanted to make this a discussion thread for MHL cables. Currently, I have a Rocketfish MHL Cable and I love it. It doesn't have to be plugged into the wall via micro usb for it to work, unlike my ONN brand cable.
Other things I would like everyone to discuss, is quality and content. I love the quality of picture that mine displays, pretty sure it's 1080p, but how about other brands?
Now for content. Has anyone been successful in getting a MHL Cable to work with protected material? For example, when I hook mine up and try to watch NFL Mobile, it says "HDMI Is Not Supported". Is there a Rom that will work? Maybe an App to download? Xposed Framework module?
Also, speaking of nfl games, has anyone been successful in getting a Super Nintendo emulator working with hdmi and two controllers for playing multiplayer games?
Basically, let's discuss anything and everything MHL for HTC One M8!!![/QUOTE]

I use one with my video head unit in my vehicle. I can mirror anything on my phone to it. I also have a MirrorLink device. All just different ways to skin a cat.